Elongated composite bars



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ELONGATED COMPOSIT BARS original Filed Feb. 14, 195o K /V VEN 70H3.'CHARLES FHA/V675 0/70' RAL PH POI-' TE@ deceased) @Ess/E w. P0@ TER' andk6@ MXHAM /VA 7'/ Oft/AL BAN/f, ,Emea/0m.

United States Patent O ELONGATED COMPOSITE BARS Charles B. Francis,Pittsburgh, and Ralph B. Porter, de-

ceased, late of Johnstown, Pa., by Bessie R. Porter and Moxham NationalBank, executors, Johnstown, Pa.

Original application February 14, 1950, Serial No. 144,154, now PatentNo. 2,749,609, dated June 12, 1956. Divided and this applicationFebruary 17, 1956, Serial No. 566,161

4 Claims. (Cl. 279--2) This invention relates to elongated compositebars and more particularly such bars for use in the continuous castingof hollow articles from molten steel as `disclosed in our copendingapplication, Serial No. 144,154, tiled February 14, 1950, now Patent No.2,749,609, dated June l2, 1956 of which this application is a division.In the handling of hollow metal articles it is often necessary tosupport the article on a bar which must subsequently be removed. This isoften ditlicult to accomplish.

It is an object of our invention to provide an elongated composite barwhich may be readily assembled and disassembled within the hollowarticle it supports.

This and other objects will be more apparent after referring to thefollowing description and attached drawings, in which:

Figure 1 is a View, partly in section, of the bar of our invention;

Figure 2 is a sectional view of a collapsible former bar in collapsedposition; and

Figure 3 is a view, similar to Figure 2, but showing the parts of thebar in expanded position.

Referring more particularly to the drawings, the reference numeral 2indicates the composite bar of our invention. The bar 2 consists of apair of spaced apart crown sections 60 having their outer surfaces 62shaped to correspond to the interior shape of the hollow article T beingformed or supported. The inner surface of each of these crown sectionshas a portion 64 which extends inwardly away from the other crownsection adjacent each end of the outer surfaces so that a space 66 isprovided between the crown sections which space widens as it nears thecenter of the bar. An under-cut portion 68 is provided on the crownsections 60 on the inner surface thereof adjacent each of the portions64. The under-cut portion 68 of each crown section 60 is connected by arelatively straight portion 70. A wedge shaped section 72 is providedVin each of the spaces 66. Each of these wedge shaped sections has apair of projections 74 thereon which are adapted to extend into theunder-cut portions 68. The inner portion of the sections 72 is straight.A diamond shaped section 76 is provided at the center of the bar. Whenit is desired to fasten a plurality of bars 2 end to end one end ofsection 76 will be provided with a projection 76et and the other endprovided with an opening 76b to receive the projection 76a.

In use the parts are rst assembled as shown in Figure 2, the section 76is then rotated on its axis to the position shown in Figure 3 whichforces the projections 74 into the under-cut portion 68 to lock theparts together. When dismantling the bar, section 76 is rotated TCCarticles which comprises a pair of spaced apart crownl sections, theouter surface of each of said crown sections being shaped to correspondto the interior shape of the `hollow article, the inner surface of eachof said crown sections having a portion extending inwardly away from theother crown section adjacent each end of the outer surface to provide aspace between the crown sections which widens as it nears the center ofthe bar, an undercut portion on said inner surface adjacent each of thefirst named portions, a portion on each crown section connecting theundercut portions, a pair of wedge shaped sections one in each of saidspaces, each of said wedge shaped sections having a pair of projectionsthereon adapted to extend into the undercut portions on each of saidcrown sections, and a diamond shaped section in the center of said bar,said diamond shaped section forcing the said projections into saidundercut portions to lock the parts together when it is turned so thatits four corners bear against the crown and wedge sections.

2. An elongated composite bar for use with hollow articles whichcomprises a pair of spaced apart crown sections, the outer surface ofeach of said crown sections being shaped to correspond to the interiorshape of the hollow article, a pair of spaced apart sections in thespace between the crown sections one at each end thereof, interlockingconnections between each of the pair of sections and both of the crownsections, and a fifth section in the center of said bar, said fifthsection being turned to lock the sections of said bar together.

3. An elongated composite bar for use with hollow articles whichcomprises four solid interlocking sections connected to form a centralgenerally rectangular cavity, and a bar having a non-circular shape insaid cavity, said bar being turned to expand and lock the sectionstogether, said sections when locked having an uninterrupted outersurface.

4. An elongated composite bar for use with hollow articles whichcomprises a pair of spaced apart crown sections, the outer surface ofeach of said crown sections being shaped to correspond to the interiorshape of the hollow article, a pair of spaced apart sections in thespace between the crown sections one at each end thereof, the outersurface of said spaced apart sections being shaped to correspond to theinterior shape of the hollow article, interlocking connections betweeneach of the pair of sections and both of the crown sections, and a fifthsection in the center of said bar, said fifth section being turned toexpand and lock the sections of said bar together, said Crown and spacedapart sections when locked having an uninterrupted outer surface.

References Cited in the le of this patent UNITED STATES PATENTS1,492,291 Giovannoni et al. Apr. 29, 1924 2,161,061 Keyes June 6, 19392,408,689 Seme Oct. 1, 1946

